The Scorpion Switching BEC Series Brushless Speed Controllers represent one of the best values in the speed controller market today. From the beautiful gold anodized heatsinks, to the unique metal containers that the ESC's are shipped in, everything about Scorpion Speed Controllers shows the company's commitment to quality. These ESC's are manufactured from top quality components, in a state of the art manufacturing facility, and are designed to provide years of trouble free operation.
Each Scorpion 6-cell Speed Controller includes a built-in Switching Style BEC circuit. This BEC provides a regulated output of 5.7 volts, and can deliver 3 amps of continuous current with 4 amp bursts. With a Switching type BEC, you do not need to de-rate the BEC as the input voltage increases. The full 3 amps of BEC current is available for any input between 2-cell and 6-cell Li-Po operation.
These new 6-cell Speed Controllers also offer a unique wireless programming system that is a first in the RC Model Industry. Unlike other ESC manufacturers, who require you to buy an add-on programming module to gain full functionality of the controller, Scorpion provides a full feature Programming Card with EVERY speed controller sold, at No Extra Charge!
The new wireless programming system consists of a postage stamp size IR receiver module that mounts in your model, and a credit card sized IR Transmitter that easily fits in your pocket or toolbox. The IR receiver plugs into the throttle channel of your radio receiver, and then the Speed Controller plugs into the IR Receiver board. To program the ESC, you simply flip the switch on the IR Receiver board to the program position, point the transmitter at the IR receiver board, type in the parameter you want to adjust and hit the Enter button. The IR board will give you a flashing light and a motor tone to acknowledge the command. Once you are finished programming, you simply flip the switch on the IR Receiver board to the Run position. This will re-boot the ESC and enter the new program into memory. After this is complete, you can fly your aircraft.
Programming your ESC has never been easier! There is no need to dig the receiver out of the plane, No need to unplug any cables, and no more dragging a laptop computer to the flying field! Programming your ESC is as easy as changing channels on your TV!
The adjustable parameters on the Scorpion 6-cell ESC's include many extra options not found on other controllers. These options include:
Low Voltage Cutoff:
Adjustable from 5.0 to 25.0 volts in 0.5 volt increments
Adjustable in 5 steps from No Brake to Very Hard Brake
LVC Cut-off Type:
50% power, Pulsed Output and No cut-off are available
Motor Acceleration Delay:
Slows motor response for use with gear box motors. Adjustable in 5 steps from 0.15 to 1.3 Seconds
Current Overload Protection:
Can be turned on or off to suit your preference
Adjustable to 8KHz, 16 Khz, or 32 Khz
Soft Start Mode:
Slows down motor spool-up for Helicopter use
Adjustable to normal or reverse rotation
6 options available, Auto Detect, 5°, 15°, 20°, 25°, and 30°
For Helicopter use, 5 settings are available 50%, 60%, 70%, 80% and 90% throttle
For starting very High Kv motors that can be difficult to start
Scorpion Speed Controllers also include all of the ESC parameters clearly labeled on the heatsink assembly. Voltage range, current rating, BEC rating, and input polarity are all clearly marked to avoid any confusion. Scorpion 6-cell Switching BEC Series Speed Controllers are also backed by a 2 year manufacturers warranty against defects in materials and workmanship, so you can buy with confidence. For a total package of Quality, Performance and Value, use Scorpion Brushless Speed Controllers.
Weight (Without Connectors) .................... 39 gm (1.38 oz)
Max Continuous Current ...................................... 30 Amps
Operating Voltage Range ................................ 5 to 26 Volts
On Resistance ............................................... 10.66 mOhms
Max BEC Output ......................................... 4 Amps @ 5.7 V
Size .......................... 70 x 30 x 10 mm (2.76 x 1.18 x 0.39 in)
* Important Notice *
The Switching BEC in this ESC is rated for 3 amps of continuous current with short bursts to 4 amps. This provides enough power to run 5-6 standard size servos in an aircraft.
If you run this ESC in a Helicopter, you must be sure that BEC will not be overloaded by the servos. This is especially true if you are running the newer Digital servos. In a helicopter that has CCPM mixing, all 3 servos that connect to the swash plate move together in unison every time you give a collective pitch change.
In the smaller 450 class helicopters, those running 300mm to 350mm size blades, the servo loads are not that high, and the Switching BEC in the speed controller is fine. For larger 500 and 600 class helicopters, those with 400mm blades or larger, the peak servo loads can be in the 6 to 9 amp range and sometimes higher, especially during maneuvers with rapid pitch changes such as Tick-Tocks. For these larger helicopters, you must disable the BEC circuit in the speed controller and run a separate external switching type BEC circuit that has a high enough capacity to provide the necessary current for your servos. For 500 class helicopters we recommend a minimum of a 5 amp BEC, and for 600 class helicopters, a minimum of an 8 amp BEC is recommended.
Failure to run an external BEC for larger helicopters will result in over-heating of the Internal Switching BEC Circuit, and could possibly lead to failure of the BEC and the Speed Controller. If you overload the BEC circuit with to much of a servo load, and cause it to burn out, this will void the warranty on your speed controller.